<template>
  <div class="app-container">
    <div class="title">课程列表</div>

    <!--查询表单-->
    <el-form :inline="true" class="demo-form-inline">
      <el-form-item label="课程名称">
        <el-input v-model="courseQuery.title" placeholder="请输入课程名称" />
      </el-form-item>

      <el-form-item label="课程状态">
        <el-select
          v-model="courseQuery.status"
          clearable
          placeholder="课程状态"
        >
          <el-option value="Normal" label="已发布" />
          <el-option value="Draft" label="未发布" />
        </el-select>
      </el-form-item>

      <el-button type="primary" icon="el-icon-search" @click="getList()"
        >查询</el-button
      >
      <el-button type="default" @click="resetData()">清空</el-button>
    </el-form>

    <!-- 表格 -->
    <el-table :data="list" border fit highlight-current-row>
      <el-table-column label="序号" width="50" align="center">
        <template slot-scope="scope">
          {{ (page - 1) * limit + scope.$index + 1 }}
        </template>
      </el-table-column>

      <el-table-column prop="title" label="课程名称" align="center" />

      <el-table-column label="课程状态" width="80" align="center">
        <template slot-scope="scope">
          {{ scope.row.status === "Normal" ? "已发布" : "未发布" }}
        </template>
      </el-table-column>

      <el-table-column
        prop="lessonNum"
        label="课时数"
        width="70"
        align="center"
      />

      <el-table-column
        prop="createTime"
        label="添加时间"
        width="200"
        align="center"
      />

      <el-table-column
        prop="viewCount"
        label="浏览数量"
        width="80"
        align="center"
      />

      <el-table-column label="操作" width="475" align="center">
        <template slot-scope="scope">
          <router-link :to="'/course/info/' + scope.row.id">
            <el-button type="primary" size="mini" icon="el-icon-edit"
              >编辑课程基本信息</el-button
            >
          </router-link>
          <router-link :to="'/course/chapter/' + scope.row.id">
            <el-button type="primary" size="mini" icon="el-icon-edit"
              >编辑课程大纲息</el-button
            >
          </router-link>
          <el-button
            type="danger"
            size="mini"
            icon="el-icon-delete"
            @click="removeDataById(scope.row.id)"
            >删除课程信息</el-button
          >
        </template>
      </el-table-column>
    </el-table>

    <!-- 分页 -->
    <el-pagination
      :current-page="page"
      :page-size="limit"
      :total="total"
      style="padding: 30px 0; text-align: center"
      layout="total, prev, pager, next, jumper"
      @current-change="getList"
    />
  </div>
</template>
<script>
import course from "@/api/edu/course";

export default {
  // data:{
  // },
  data() {
    return {
      list: null,
      page: 1,
      limit: 10,
      total: 0,
      courseQuery: {},
    };
  },
  created() {
    //页面渲染之前执行，一般调用methods定义的方法
    //调用
    this.getList();
  },
  methods: {
    //创建具体的方法，调用teacher.js定义的方法
    //讲师列表的方法
    getList(page = 1) {
      this.page = page;
      course
        .getCourseListPage(this.page, this.limit, this.courseQuery)
        .then((response) => {
          //请求成功
          //response接口返回的数据
          this.list = response.data.rows;
          this.total = response.data.total;
        });
    },
    resetData() {
      //清空的方法
      //表单输入项数据清空
      this.courseQuery = {};
      //查询所有讲师数据
      this.getList();
    },
    removeDataById(id) {
      this.$confirm("此操作将永久删除课程记录, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      }).then(() => {
        course.deleteCourseId(id).then((response) => {
          this.$message({
            type: "success",
            message: "删除成功!",
          });

          this.getList();
        });
      });
    },
  },
};
</script>
